Sometimes I remember that Supernatural writers are so bad at their jobs that they accidentally made it canonically impossible for Dean to be John’s son
Okay okay this is for the (2) people who asked for this and those two people specifically. So in season 2, we see a John’s dog tags. These dog tags demonstrate that his blood type is AB. And in season 10, during the ritual to turn demon Dean human again, we learn that Dean’s blood type is O+. Idk what you remember from 9th grade biology, but it’s impossible for someone with AB blood to have a kid with O+ blood, meaning it is biologically impossible for Dean to be John’s son.
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